Which Central American country is home to the ancient city of León?

The ancient city of León is located in Nicaragua, making it the correct answer. León was founded in 1524 and is one of the oldest European cities in the Americas. It is known for its rich history, colonial architecture, and being a center of culture and education in Nicaragua. The city was also an important political and economic hub during the Spanish colonial period.

Nicaragua's León is particularly notable for its significant historical landmarks and museums, which showcase its importance as a cultural center. The city played a crucial role in Nicaragua's revolutionary history and continues to be a focal point for Nicaraguan identity and heritage.

Other options, such as Costa Rica, Honduras, and Belize, do not have any ancient cities specifically named León within their borders. Instead, these countries have their unique historical and archaeological sites that differ from what can be found in León, Nicaragua.